Ten months since her husband passed away──. Aika, who had been living with her father-in-law Kazuyuki, was planning to return to her parents' home after the first anniversary of her husband's death. Although she hesitated to leave her father-in-law alone, her mother needed care. Kazuyuki watched such an Aika… The regret for his childless son who preceded him in death and the loneliness drove him towards a twisted affection. He bound Aika's body with ropes, taking away her freedom, and dragged her into a lewd and obscene world of SM along with his feelings for her...
